(CNN) -- Four Afghan civilians were killed by rocket attacks on NATO-led bases in southern Afghanistan Sunday, including on barrage launched from across the border in Pakistan, NATO's International Security Assistance Force (ISAF) said.
Three of the deaths happened near dusk Sunday when five rockets fired from about 300 yards inside Pakistan hit the village of Kundai, ISAF said. One rocket landed inside the ISAF base and wounded an Afghan male, ISAF said.
ISAF troops responded with an artillery attack aimed at the launch site, ISAF said.
"The Pakistan military was immediately notified when ISAF forces came under fire," ISAF said.
One Afghan civilian was killed early Sunday when 13 rockets were launched toward an ISAF base in the Khowst province, ISAF said.
The launch site, which was inside Afghanistan, was then targeted by ISAF artillery and an airstrike, ISAF said.
On Saturday, several rockets were launched from inside Pakistan toward an ISAF base in Afghanistan's northeastern Paktika province, ISAF said. There were no casualties reported.